Boring-machine



' (No Model.)

0. R. OTIS. BORING MACHINE.

3 Sheets-Sheet 1.

atented May 2. 1882.

(No Model;) 3 Sheets-Sheet 2= (LR. OTIS.

BORING MACHINE. V N0.257,374. PatentedMayZJSBZ.

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w 0- Z 1 I 3 Sheets-Sheet 3.

(LR. OTIS. BORING MACHINE.

Patented May 2, 1882.

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(No Model.)

liE'ST AVAILABLE CPY UNIT D TATES PATENT OFFICE.

BORI NG-MACH'lNE.

SPECIFICATION forming part of Letters Patent No. 257,374, dated May? 1882.

Application iilcd'Novc nbcrll, 185]. (No model.) l

To allzvlzom zt mayconccrn: 1 Bait known that I, CHARLES R. OTIS, of the city of Yonkers,Westchesiervcounty, ;New

York, have invented an'Apparatus for Borfollowing, is a specification. My invention relates to that class of appsratus used for boring cylinders or pipes; and it consists in the construction and arrangement of parts hereinafter fully described, whereby the placing and removal of the cylinders and'-horingbar, the adjnstnientof the various parts, and the starting and stopping of the apparatus may be effected with tho 1 :least lossnof time and with the greatest facilitym The further purpose and result is to secure precision in the operations.

i In the drawinggFigurel is a perspective view of the apparatus, Fig.2 isa side elevation in s'ection;,Fig. 3, a side elevation, re duced scale; Fig. elja sectional plan on the line 1?,1lig.2; Fig. 5, a plan on the line 3 4, i Fig. )2; Fig. 6,, a section of the boring-bar; Fig. 7, at end viewof the boring-bar, Fig.8, a plan showi'ng'the arrangement when two or hereheingp aged j deface-plate ngiiorizontai, snare f *volve'dfabovfl a'-:;'bench,l B,- an, adjustable or swinginf gwtail-stock, A, secured to vertical shears a a, so as to be brought into line with the head-stock above the same, and a removable boring-bar, 0, turning on the centers of the stocks when in operation. i v

The faceplate b carries two lugs, 2 2, arranged each to bearon ashouldcr, 3, ofa ring, 0, on the lower end of the boring-bar. Thus as the face-plate revolves in the direction of c the arrow it turns the boring-bar with it. v

Thehead-stock spindleis driven from ushaft, D,*fthrough the medium of any suitable appliances arranged within the bench B, andthe ihce-plateis surrounded by a flange i, broken at one point,5, where the chips are discharged by means of an inclined vane, 6, projecting from the edge of the face-plate." i To th e shears are secured clamp consisting ofa jaw, d, secured fixedly or adjustably to the shears c a, and a movablejaw, d, pivoted at one side to the jaw d by a pin, (P. A bent arm, 0 is pivoted to the other side, and constructedto be swung into anotch in a lip, c, on the other jaw, and is there held by ing' and Manipulating Cylinders, of which the receive the'spindle of the lower stock.

more boring apparatus are used tog h f-W. general arrannelne wcl' t e arm? i iiead-jstock, 'A

f the screw is turned and the riu'gand cutter carriedj u'pward, (or downward,) gradually feeding thc cutter longitudinally as it is also carried round within the cylinder; but should screwing a nut, e against said lip. 'lhe jaws, 5-

whcn thus held together, present a circular Such clamps may he opened to receive later rally tubesor cylinders with flanges of too great width to permit a longitudinal introdnc' tion, and by the act of closing at once center vand secure the cylinder-in its position between tlie stocks. a

The boring-bar is raised and L lwered by means of a rope, 8, and drum or Windlass F, the rope being provided with grapplesil, adapt ed to eyes 10 on the upper end of the huigthe lower end of which is centrally sochcted gto The tailstock is hung at one side hy'a tical pin, 11, passing through holes in para cross-pieces 12 on the shears,and through onebraclcet, 13, of the stock, the other bracket, 14, being perforated for thc .passageof another pin, by which it may he locked in'plu "l indle l5fof, the tail c-s'wungonVthe'othertopne side,;-') 7 l A way, to permit the introduction oriwithdre' ofthe boring-her, and when the letter i in use it maybe swung by its hoisting-rep tween the shears c a, and deposited with its end bearing on the upper cross-bar, 12, as a seat, as shown in Fig.3. v

From the tail-stock extend downwar fingers f, arranged to be struck byastar-whenl, g, on the end of a leeding-screw, j, turning in bearings of the cutter-bar, and carryingaring, h, in whichis inserted a springhutteni, arranged to bite into thomeiul when the bar .turns in the directionof the arrow, I igsZ-and' 6,hut yielding when the motion is reversed.

As thearms of the wheel 9 strike the fingers reg jaws and removing them. I have shown in the drawings a most convenient arrangement, the drum being mounted on a shaft, 1.6. haw inp; its hearings in suitable hangers, J J, and provided with a toothed wheel, 17, gearing Will] a pinion, I8. of a clutch, 74, on a shaft, G, carrying a worm-wheel. 19, gearing with a worm, 20, on a driving-shaft, H, turning in suitable hangers.

The sliding section 22 of the clutch is carried by arms 23 on a bar, I, sliding in the hangersJ J, and in hearings on the hanger J turns a shaft carrying a pul,ley,24, and a pinion,25, "which gears with the rack on the bar I. A cord, 29, (passing round the pulley 24-. and guidepnlleys 26 26,) extends at each end down to a point near the bench B,where it is provided with handles. Bypnllin'g the ends of thecord the pinion may be turned to throw the rackbar I in one direction or the other, so as to throw the clutch into or out of gear, this being effected by the workman at the table B, or by one on any one of the floors through which the cord may pass. y 4 It is essential to the expeditious operation of the device that the drum F be quickly arrested, reversed, and started,for which purpose 1 use'the reversing appliances shown in Figs. 1 and 5.

The driving-shaft H is provided with a. fixed pulley, 30, and two idlers,3l 32, and a bracket, K supports two shifter-bars, L L, carrying belt-guides 35.

A vertical shaft, m carries a cam-wheel, M, into the irregular groove n of which enters studs :8 on the shifter-bars,as shown iuFig.5.

The I cam-wheel is so constructed that by turning the same one bar will be thrown outward or inward a little ahead ofthe other, and. the belts are shifted, the one from, and the other upon the driving-pulley, to reverse the "motion of the drum and raise or lower the load.

' As one belt is removed from the driver before the other comes upon it, time is allowed for the application of the brake hereinafter described. The reversal is effected from the lower or intermediate floors by a rope, 34, passing around a pulley, 33, on the shaft m, ovenguide-pulleys, and downward through the doors, to a position adjacent to thebench B, where itis provided with handles q, so that the workman at the bench, by pulling the ends of the ropes 29 34, can stop orv start the drum Fin eitherdirection or reverse its motion while running.

Topreventtheeontinued rotation of the drum 1 ,by momentum, when a belt is thrown upon its idler-pulley, I use a brake-lever, N, provided with ashoe, s, arranged to bear on the driving-pulleyj30, the lever-being pivoted to the bracket K at to, and its inner end bearing on a cam-projection, i so arranged on the shaft m. as to bear on the lever and" press the shoe .9 against the drivingppulley at the moment the belt passes onto the idler-pulley, a spring, 85, retracting, the lever as the cam t is carried'i'a-r the'r round.

The apparatus above described may be one of a series which may be in simultaneous operatlon, in which case the general arrangement will be such as shown in the'plan, Fig.-

8, inwhich I is the main driving-shaft, and the shaft G drive'sfa series of drums,-E, each arranged above or'ndjacent to pairs of jaws and operating in connection with a rotating .ln-ad-stoek andmovablc tail-stock, as above described, any oncof the drums beingthrown into or out of operation by clutch mechanism,

as before, independent of the other clutch devices. dgghe clutch and elevating devices may be of erent constructions, and the tail-stocks may be arranged to slide to one side instead of being hinged. Difiercntly-constructed clamps and centering devices may also be used; but in any casethe general operations will be the same,nnd the tubes or cylinders can be adjusted with precision and set in place, removed, and accurately bored with a celerity that is unattainable by ordinary mechanism.

It will be seen that by the use of a suflicient number of clamps extremely long tubes or a series of tube-sections bolted together may be bored at once.

I claim- 1. In a boring apparatus, the combination, with a vertical bed or shears, of a rotating head-stock, tail-stock capableof lateral adj ostment to carryfit out of line with the headstock, and elevating mechanism constructed and arranged to raise and lower the cylinder and boring-bar, substantially as set forth.

2. The combination, with the tail-stock, ot' the fingers f, arranged to be struck by the starwhcel on the screw of the boring-bar, substantially as set forth.

3. The combination, with the bench and head-stock, of a flange, 4, and vane 6, substantially as set forth.

4. The combination of the head and tail stocks, arranged vertically, the hoisting mechanism, driving-shaft, clutch device for throwing said mechanism into and ont'of operation, and appliances extending to the bench where by the clutch-may be operated, substantially as set forth.

5. The comhination,.with the hoisting-drum,

driving-shaft, and driving and idler pulleys, of the shifting devices and appliances extending to the bench B, constructed to shift both alts, one ahead of the other, substantially .s'set forth. l I

'6. The combination, with the shaft 0h find cam-wheel M, of the shifting-bars and the rope 34, passing around a pulley on the shaft and extending to the bench B, substantially as set forth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses. J

' CHAS. R. OTIS.

W itnesses:

' M. M. VA'IL,

. FRANK Vitamin.

IIO 

